Improvement in apparatus for treating saccharine liquids



C. W. DURANT.' y -Appa ratus for Treating saccharine Liquids.

No. 135,788. Patented Feb-11,1873.

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UNITE STATES fPATENT OFFICE.

CHARLES w. DURAN-T; OF NEW YORK, N. Y.

IMPROVEMENT IN APPARATUS FOR TREATING SACC HARINE LIQUIDS Specificationforming part of Letters Patent N 0. 135,788, dated February 11, 1873.

To all whom it may concern:

Be it known that I, CHARLES W. DURANT, of the city, county, and State ofNew York, have invented a new and useful Improvement in Apparatus forTreating Saccharine Liquids; and I do hereby declare the following to bea full, clear, and exact description thereof, which will enable thoseskilled in the art to make and use the same, reference being had to theaccompanying drawing forming part of this specification, which drawingrepresents a sectional front view of the apparatus which I use incarrying out my invention.

This invention consists in combining with the heating-coils of avacuum-pan a closed receiver, which connects with the steamboiler, fromwhich the steam for the heating coils is taken, the pipe connecting there ceiver being provided with a check-valve, while the receiver connectswith a tubular vessel for receiving a saccharometer in such a mannerthat the steam from the boiler passes through the heating-coils into thereceiver, Where the same condenses, and whence the water of condensationflows back into the boiler by its own gravity, thereby producing auniform heat in the pan and feeding the boiler with water at a hightemperature, and if a leak occurs in one of the heating-coils, so that apart of the liquid contents ofthe pan will escape through said coil andcollect in the receiver, and by opening from time to time the connectionwith the tubular vessel and introducing a saccharometer, the leak isdetected, and much loss of saccharine liquid and also injury to theboiler and to the heatin goods are avoided.

In the drawing, the letter A designates a vacuum-pan, in which aresituated four (more or less) heating-coils, B. The receiving ends ofthese coils connect with a steam-pipe, O, which emanates from asteam-boiler, D, and the tail-pipes E F G H connect with a re ceiver, I.This receiver is by preference made of boileriron, closed everywhere,and strong enough to resist the boiler-pressure. It is situated atalevel above the steamboiler, and from its side, near its top, extends apipe, J, to and into the bottom part of the boiler. This pipe isprovided with a check-valve, a, next to the boiler, and as the steamfrom the boiler passes through the heating-coils into the receiver I,which is partially filled with water, the steam condenses, and, as soonas the level of the water in the receiver rises above the mouth of thefeed-pipe J, it descends by reason of its own gravity into the boiler,the pressure in. the receiver being the same as that in the boiler. Fromthe side of the receiver extends a pipe, I), which connects with atubular vessel, K, by preference made of glass or provided withtransparent sides, so that its interior can be inspected. In the pipe I)is a cock, 0, and by opening this cook a portion of the contents of thereceiver can be let into the tubular vessel, which I term the try-vessel. After this vessel has been filled with liquid from thereceiver, I introduce therein a saccharotneter of any desiredconstruction, so as to ascertain the gravity of the liquid.

By these means I am enabled to ascertain at any time if the liquid inthe receiver is mixed with saccharine matter. If any such saccharinematter is found it shows that one or the other of the heating-coils isdefective, and that a portion of the contents of the vacuum-pan passesthrough a leak in the heating-coil down into the receiver. As soon assuch a defect is detected the vacuum-pan is emptied and the defectremedied, and no injury is done to the boiler or to the pipes; but ifthe tail-pipes of the heating-coils are in direct communication with thesteam-boiler, and one of said coils becomes leaky, the saccharine matterescaping from the vacuum-pan through such defective coil passesdirectlyinto the boiler, where it produces an injurious foaming anddanger of an explosion; and, furthermore, the loss of saccharine liquidis not detected for some time, and the defect in the heating-coil cannotbe remedied until much injury has been done.

The receiver I is supplied with water through a pipe, L, and it connectswith the steamspace of the boiler by a pipe, M, and with the water-spaceor feed-pipe by a pipe, N.

If the vacuum-pan is not in operation and the boiler requires to be fedwith water, the receiver is partially filled; then the steam-pipe M isopened, and, as soon as the pressure in liquid of the receiver, and forthe purpose herein specified.

2. In eombination'with the receiver having a testing-chamber andconnecting with the tail-pipes of the heating-coils of a vacuumpan,essentially as described, the pipes M J N L, operating in respect toeach other and to a steam-boiler substantially as set forth, for thepurpose specified.

O. W. DURANT. Witnesses:

W. HAUFF, E. F. KASTENHUBER.

